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Questions  

During an isothermal expansion, a confined ideal gas does 150J of work against its surroundings. This implies that:

a
150 J of heat has been removed from the gas
b
300 J of heat has been added to the gas
c
No heat is transferred because the process is isothermal
d
150 J of heat has been added to the gas

detailed solution

Correct option is D

in isothermal process ∆U=0 so Q=W=150J

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